Question: Which is the biogeochemical cycle which starts with letter c?
Paraphrase: Which is the biogeochemical cycle which begins with letter c?
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q846303 . ?sbj rdfs:label ?sbj_label . FILTER(STRSTARTS(lcase(?sbj_label), 'c')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: carbon cycle, carbon cycle, calcium cycle, calcium cycle, copper cycle, copper cycle, chromium cycle, chromium cycle, chromium cycle, chromium cycle, chlorine cycle, chlorine cycle, cadmium cycle, cadmium cycle, chlorine cycle, chlorine cycle, cadmium cycle, cadmium cycle